Translocation (OCR GCSE Biology A (Gateway Science Suite)): Flashcards
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Definition of translocation
Definition of translocation
Transport of dissolved sugars & organic nutrients through phloem
Vessels where translocation occurs
Vessels where translocation occurs
Phloem vessels
Primary form of sugar transported in translocation
Primary form of sugar transported in translocation
Sucrose
What leaves are called in translocation
What leaves are called in translocation
Source
What areas using/storing sugars are called
What areas using/storing sugars are called
Sink
Directions sugars move in phloem
Directions sugars move in phloem
Both directions (up & down)
What drives sugar flow in phloem
What drives sugar flow in phloem
Pressure differences between source and sink
Two components of phloem tissue
Two components of phloem tissue
Sieve tube elements and companion cells
Two uses of transported sugars in plants
Two uses of transported sugars in plants
Growth and storage
Effect of increased photosynthesis on translocation
Effect of increased photosynthesis on translocation
Increases rate of translocation
Effect of higher temperature on translocation
Effect of higher temperature on translocation
Increases translocation rate
Nutrient crucial for phloem function
Nutrient crucial for phloem function
Potassium
Method to measure translocation in plants
Method to measure translocation in plants
Radioactive tracers (e.g. carbon-14)
How translocation differs from transpiration
How translocation differs from transpiration
Translocation moves both ways; transpiration only upward